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  2. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    However, the 50 Beowulf case is longer than the 50AE, so the 50AE cases cannot be used as a donor. Note about donor cases : The 7.62x51 military cartridge the civilian version is the .308 cartridge. Since its dimensions are taken from the 30-06 cartridge from the 1906 US Army cartridge, the lower half of these case dimensions have been used for ...

  3. .50 Beowulf - Wikipedia

    en.wikipedia.org/wiki/.50_Beowulf

    With normal bullet weights between 300 and 400 grains (19 and 26 g), overall cartridge length shorter than that of an AR-15 magazine well, and holding to pressures of 33,000 psi limited by the AR bolt strength system, [2] the .50 Beowulf is best described as a low-velocity, heavy caliber, making its ballistics roughly equivalent to those of ...

  4. 8.6mm Blackout - Wikipedia

    en.wikipedia.org/wiki/8.6mm_Blackout

    8.6mm Blackout (8.6×43 mm), sometimes referred to as 8.6 BLK, [1] is a centerfire rifle cartridge developed by the firearms manufacturer Q, LLC. [6] It utilizes a shortened case from the 6.5mm Creedmoor necked up to an 8.6 mm caliber (8.585 mm or 0.338 in diameter) projectile. 8.6 Blackout is designed for use in bolt-action rifles or as a caliber conversion for AR-10 style rifles.

  5. List of Colt AR-15 and M16 rifle variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Colt_AR-15_and_M16...

    ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.

  6. Barrett M82 - Wikipedia

    en.wikipedia.org/wiki/Barrett_M82

    The Barrett M107 is a .50 caliber, shoulder-fired, semi-automatic sniper rifle. Like its predecessors, the rifle is said to have manageable recoil for a weapon of its size owing to the barrel assembly that itself absorbs force, moving inward toward the receiver against large springs with every shot. [ 5 ]

  7. .50 GI - Wikipedia

    en.wikipedia.org/wiki/.50_GI

    The .50 GI has developed a reputation for accuracy, though this may be due to the high precision of the semi-custom and very expensive Guncrafter pistols themselves. In one test, the 300 grain (19 g) jacketed flatpoint (JFP) gave a 25-yard group of 2.56 inches, and the 300-grain Jacketed hollow point (JHP) and 275-grain JHP gave a 25-yard group ...

  8. Ultra-runner near the end of a 50-mile excursion attacked by ...

    www.aol.com/news/ultra-runner-near-end-50...

    An ultra-runner was near the end of a 50-mile trek when he had a close encounter in Yosemite Valley with a very big black bear.

  9. .50 Alaskan - Wikipedia

    en.wikipedia.org/wiki/.50_Alaskan

    The .50 Alaskan / 13x53mmR is a wildcat cartridge developed by Harold Johnson and Harold Fuller of the Kenai Peninsula of Alaska in the 1950s. Johnson based the cartridge on the .348 Winchester in order to create a rifle capable of handling the large bears in Alaska.